Have you ever wondered how your tweets are being posted in twitter?

Here is the answer to the Question . Our tweets are posted in a fraction of second ,but actually a lengthy process is involved . 

To help explain the importance of the JVM within the Twitter infrastructure, here is a high-level overview of the primary ways in which the JVM affects an average Tweet as it is set loose into the Twitter sphere:

1. A popular fashion pundit seesa Best Actress nominee emerge from her limousine on the evening of the Academy Awards. She types her impressions into a Twitter app on her smartphone: “Glamorous Jennifer Lawrence approaches red carpet in white Dior gown evoking old Hollywood.#OscarsFashion2013.” Her Tweet is geotagged with geographical metadata noting the location.

2. After she hits the Tweet button,her message is sent to Twitter’s

front-end routing and load balancing tier, which is written in Scala and runs on the JVM. The front-end system communicates with Twitter’s business tier, which also runs Scala, to authenticate the user and verify that her incoming Tweet conforms to the site’s business rules.

3. The Tweet enters an asynchronous pipeline that will end up delivering it to the caching and storage tiers. Once the Tweet enters this pipeline, the system sends back a reply informing her that her Tweet was successfully posted. In the background, the Tweet is then delivered to all the users who follow this popular fashion authority.

4. Next the Tweet enters Twitter’s relevance pipeline, which determineswhat it is about and who will be interested in it. Relevance is based not only on followers, but also on information within the Tweet: who the sender is, where it was sent from (geotag), and the hashtag that categorizes Tweets by keywords.

5. A Java program in this pipeline recognizes that the hashtag #OscarsFashion2013 is being used on a large number of Tweets and adds that hashtag to Twitter’s trending topics. Instantly, Twitter users around the world see #OscarsFashion2013 as a topic of interest and can send or receive Tweets with that hashtag.

6. When another fashion minded user sees the rending #OscarsFashion2013 hashtag, he or she can click on itwhichresults in a Scala program retrieving the Tweet from the cache or storage tiers